Who first determined the size of the Earth?

Who first proposed the Earth is a sphere because of the curved shadow on the Moon?

Who determined the planets move at different speeds in elliptical orbits?

Who built an observatory and made more precise observations than any previously?

Who determined that Earth is just a planet that rotates and revolves around the Sun?

Who supported the Heliocentric Model of the universe and discovered the four large moons of Jupiter?

Who discovered CMB?

Who determined that the farther away a galaxy is the faster it is moving away?

What is the idea that the Earth is motionless at the center of the universe with everything revolving around it?

What is the idea that the Sun is the center of the solar system and all the planets, including Earth, revolve around it?

Who developed the formula E=mc2

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